Title :
Cyclostationary Signatures in Practical Cognitive Radio Applications
Author :
Sutton, Paul D. ; Nolan, Keith E. ; Doyle, Linda E.
Author_Institution :
Univ. of Dublin, Dublin
Abstract :
We define a cyclostationary signature as a feature which may be intentionally embedded in a digital communications signal, detected through cyclostationary analysis and used as a unique identifier. The purpose of this paper is to demonstrate how cyclostationary signatures can be exploited to overcome a number of the challenges associated with network coordination in emerging cognitive radio applications and spectrum sharing regimes. In particular we show their uses for signal detection, network identification and rendezvous and discuss these in the context of dynamic spectrum access. We present a theoretical discussion followed by application-oriented examples of the cyclostationary signatures used in practical cognitive radio and dynamic spectrum usage scenarios. We focus on orthogonal frequency division multiplexing (OFDM) based systems and present an analysis of a transceiver implementation employing these techniques developed on a cognitive radio test platform.
Keywords :
OFDM modulation; cognitive radio; digital radio; cognitive radio applications; cyclostationary signatures; digital communications signal; network identification; orthogonal frequency division multiplexing; signal detection; spectrum sharing; Availability; Cognitive radio; Communication system control; Digital communication; OFDM; Robustness; Signal analysis; Signal detection; Transceivers; White spaces;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
DOI :
10.1109/JSAC.2008.080103